package com.yh.utils;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.yh.bean.User;

/**
 * Servlet Filter implementation class Filter1
 */
@WebFilter(urlPatterns={"*.do","/html/lhtml/*"})
public class Filter1 implements Filter {

    /**
     * Default constructor. 
     */
    public Filter1() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req=(HttpServletRequest)request;
		User user=(User) req.getSession().getAttribute("user");
		System.out.println("1,");
		if(user!=null && !user.equals("")){
			chain.doFilter(request, response);
		}else{
		      HttpServletResponse res=(HttpServletResponse)response;
		      String projectUrl=req.getContextPath();
		      System.out.println(projectUrl);
		      res.sendRedirect(projectUrl+"/html/testlogin1.jsp");
		}		
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
